Internal-combustion engine



L. L. TURNEY.

INTERNAL COMBUSUON ENGINE.

APPLICATION FILED FEB. 21,1919.

Patented Apr. 20, 1920.

2 SHEETS--SHEET l.

wmf f L. L. TURNEY.

INTERNAL COMBUSTION ENGINE. APPLICATION FILED FEB. 21. 1919.'

l 337', 4 1 7 i Patented Apr. 20, 1920.

2 SHEETS-SHEET 2.

fi "i Application i led To all `whom t 'may Concern:

rio it known that l.) line la. oitiyien ot the United States,

residing' at n :i j

it vansvih e., in the lriiiinty Vanderhiirg ind State of indiana, haveinvented oeriieiv and iiseiiiil improvement in .lnl-ConihiistionEnginesa o'f which the is a iiill., Clear, Concise, and description9reference heling' had to the aoooinpanyiiig drawings, forming a part ofthis peeiiicatioi Inj; invention relates to internal ooinhnstionengines, and has i'or its primary object the provision of a cheap,compact and eilioient engine. Although the several iniorovements of myinvention hereinafter pointed ont in detail are applicable to engineso'i various sizes5 thej,T possess Certain additional advantages v-Iheniised in connection with engines having relatively loiv horse poivei,

and ior this reason have described and illustrated the invention asagolied to an engine hating a horse omver ot one and onehalf.

More speeilioallv my invention relates to that part of tie engine whichcomprises the crank oase., the crank shaft., iy Wheel and gear and commechanism lor ogerating;` the vali/'e or i( iition mechanism, or hoth.

The outstanding feature oit the invention resines in the fact that allof the gear and il'v `ivheel mechanism is entirely inelosed hy a singlecrank ease, and tiiat the parts are Constructed and arranged so that theprooess or manufacturing the parts and the method of assembling` thoseparts heoome very simple, thiis reducing the Cost ot the engine to aminimum.

Noi'nvithstendingthe olieapness of oonstiiietion and oompaetness oi theengine huilt in acoordanoe Vith the jo ineinles oi my invention7 theengine possesses certain mechanical adva tages over the common i.@manchis View heirg taken along the line .o looking in the directionindithe arrows.

cated by Similar characters oi reifer noe rete' to i throngliont theseveral vieivs. ing first to l, designates an ejilinder comprising' thehere 5 and the tooling` Chamber o. rranged to revoiprocate ivi-shin thehere 5 inthe iisiial ni .nner is a piston provided ivith a wrist pin d,which affords connection hetiveen the piston and the oonneetino rod 9.

Bolted oi' otherwise secured to the @vlinvier easing o'f tio engine is aCianlacase l which serves to support the crank sliatt a id to inclosothe iv Wheel and gear mechaiiisni, as ivill he pointed ont hereinafter,

ll, includes a Cover plate 'lL s i ni il a r gel engine -e crank Caseffiiiiipoited by the oranli case i() and the over plate il which forms apart ol the crank easing' are the tivo hearing hiishinq's and lil,forming heai'in for the .ft ist. rhis Ciaiil shaft s provided withnsiial Crank arm, shown at 15h15. and a f anlr pin l5. to Wliii'h the lov end'oic the connecting rod is attaohed. The iiv Wheel i the engine ispositioned liest knoivi in n l, inside of the (frank easing l0, andiinniediateljyv adje-.oei t one ot the oranl arms 5. ln the preferred'foi/'m oi my invention this Crank arm is en'ihedded in rho tlv wh eA asmost oleailj,7 shoivn in l. rhe iijy Wheel l' has a driving iit with theeranl: si., it 3.4i-, and is east so as to provide the ref .it rfheilia'i'tioiilar eoniorinw is best illustrated n Fie'.

l .nent with th. Crank 3) and i.. adapted to he looked in position h vthe look mit i9. The Construction jiist de fi'ihed takes che place otthe lcev and slit nieohanisni commonly ein joloj-,ied for Connecting'the tij; Wheel with the Crank shaft. lt vfill lie observed that by meansthe sereni and lolfing nii-t 18 and 19 the vlieel may he lo ed to theorenlt shaft, more easil;T t an is the oase with the old hey and slot arangeni Moreover. after the Crank sh anc. fly Wheel have lutely nochance for lost motion between the crank shaft and fly wheel, as was thecase in the old arrangement of key and slot.

ln locking the crank shaft to the fly wheel, as pointed out above, it isonly necessary tiet the side of the crank arml opposite the screw andlocking nut 1S and 19 restagainst the wall of the recess i6, but inorder to add additional locking means, the arrangement shown in Figs.and 3 may be employed. rlhis arrangement consists in providing notch 20in the wall of the recess l5, into which notch lits the projection 2l ofthe crank arm l5. r)This additional locking arrangement insures againstlongitudinal mov nt of the fly wheel, al

thou gh this is by no ireans necessary, in that tij; wheel may be heldagainst longimovement by the crank arm l5 and fing l2, as shown in Fig.l.

sed within the cranl casing i() and yed or otherwise secured to thecrank shaft le is a pinion meshing with the gear 03, mounted on thesleeve 2a forming' part of a cam '.lhe sleeve 2a, as shown, ent-endsthrough the cover plate il and has the cam portion 25 thereof disposedoutside of the casing. The cam 25 is adapted to cooperate with theroller 26, mounted on the lower end of the pushrod 2'?, which in turn isarranged to operate a magneto or valve mechanism or both. Pivoted at 28and 29 to the gear 23 are two centrifugal arms 30 and 3l adapted, whenactuated, to press outwardly against a pin 32, normally held in theposition shown by the spring 33. The outer end of the pin 32 is arrangedto press against the lever e, pivoted at 35 to the crank casing. Theupper end of the lever 3ft is adapted to engage a projection 36 carriedby the pushr'od 27.

ris the speed of the engine increases, the centrifugal arms 30 and 8lare forced outwardly, with the result that the lever 34 is swung in aclockwise direction to engage the projection 35, with the result thatthe pushrod 27 is held way from engagement with the cam 25.

From the above it will he observed that all of the gearing is entirelyincl-oset by the crank casing, as is the fly wheel vof the engine, andthat the single casing is all that is necessary to eiiect this entireinclosure.

rlhe arrangement of mounting' the ily wheel immediately adjacent thecrank arms l5 has an additional advantage in that any twisting tenoencyon the crank shaft is entirely eliminated.

Having thus described my invention, what Lolaim as new and desire tosecure by lietters Patent of the United States is:

l. An internal combustion engine comprising a crank casing, a crankshaft journaledv in the casing, a fly wheel provided Vdiately adjacentone of the cheeks with a recess, a crank arm carried by the shaft andextending into said recess, a screw carried by the crank arm and adaptedfor engagement with one of the walls of said f opposite the screw,arranged to register in a similari shaped notch provided in the fall ofthe said recess, substantially as forth.

2. fin internal combustion engine comprising a crank casing, a crankshaft journaled in said crank casing, a fly wheel mounted on said shaftand disposed immeof crank formii a part said crank s said fly wheelcomprising abutment p lying' adjacensJ opposite edges of said cheek andembr .ad crank cheek tween them, together with an adjnsteble screwthreaded into one edge of said crank k, said screw arranged to bearagains e of said abutments and to hold th ontJ e opposite edge of thecrank cheek againt the other abutment.

3. in internal combustion engine comprising a crank casing, a crankshaft j: naled in said casing, a iiy wheel. 'said wheel disposedimmediately adjacent acl 'el of the crank forming a part of said crankshaft, said fly wheel portions lyine` adjacent opposite the said cram:cheek and embracire` the crank cheek between them, wit, a d

justable means acting between one o" abutments and the adjacent edge off) crank cheek arranged to hold the opposite i edge of the crank cheekfirmly in eng-agement with the other abutment.

il. A internal combustion engine comprising a crank easing, a crankshaft journaled in said casing, a fly wheel, said fly .vheel disposednmediately adjacent a cheek'of the crank forminga part of said crankshaft, said fry wheel comprising abutment portions lying adjacentopposite enges of the said crank cheek and embracing the crank cheekbetween them, together with adjustable means acting between one of saidabutments and the adjacent edge of the crank cheek arranged to hold theopposite edge of the crank cheek irmly in engagement with the ot ierabutment, the last mentioned abutment and the last mentioneifl crankcheek each'being provided with cooperating l! -shaped notch and1l-shaped projection substantially as set forth.

ln witness whereof, l hereunto subscribe my name thisl/ith day ofFebruary, 19M).

- LEE L. TUENRY.

Witnesses MARY Fan Pernis, EDNA V. GUsrArsoN.

comprising acntnient

